728754231 has 8 divisors (see below), whose sum is σ = 1003016704. Its totient is φ = 470163960.

The previous prime is 728754227. The next prime is 728754233. The reversal of 728754231 is 132457827.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 728754231 - 2² = 728754227 is a prime.

It is a super-2 number, since 2×728754231² = 1062165458400802722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 728754231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728754233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3917941 + ... + 3918126.

It is an arithmetic number, because the mean of its divisors is an integer number (125377088).

Almost surely, 2^728754231 is an apocalyptic number.

728754231 is a deficient number, since it is larger than the sum of its proper divisors (274262473).

728754231 is a wasteful number, since it uses less digits than its factorization.

728754231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7836101.

The product of its digits is 94080, while the sum is 39.

The square root of 728754231 is about 26995.4483385626. The cubic root of 728754231 is about 899.8988491259.

The spelling of 728754231 in words is "seven hundred twenty-eight million, seven hundred fifty-four thousand, two hundred thirty-one".